We felt this was an excellent choice for a relaxing budget stay in Stuttgart and it is close to the central train station, Schlossplatz and other important landmarks in the city. We came here for the Christmas market and were presently surprised by the city as well. The hotel was also pretty affordable, they allowed us to check in very early and there is a nice bar/common area on the ground floor.
The room we got was perfect for us because it was quiet and comfortable. We appreciated that we had two different styles of pillows to choose from and a large TV with some English channels. There is a small desk in the room, closet area and plenty of space to put our things. My wife enjoyed the day bed/reading nook by the window. They provide paper cups but we had to go to the bar one night to ask for replacements and they gave us some nice glass cups.
The hotel has parking on site and a decent looking breakfast. There are plenty of places to eat in Stuttgart including some very nice bakeries so we chose that instead but it is a little bit of a walk to those. Google Maps showed it was a 5 minute walk to the train station and that is true if you're taking local U-Bahn trains but due to construction in the area it will take about 10-15 minutes to get to the central station platforms. There is an underground passage just to the northeast of the hotel that gets to the Central Station and U-Bahn and once the construction is complete it should be easier to access the city transfers.